Radio and phonograph combination switch



Nov. 15; B'

- w. LYTTGN ET AL.

RADIO AND PHONOGRAPH COMBINATION swI'fcH Filed Oct 20. 1924 2 Sheets-5`neet w.. 'tamil Nove 15, 192 7.

w. :,YTTON ET AL I RADIO AND PHONOGRAPH COMBINATION SWITCH Filed Oct. 20. 1924 2 Sheets-Shea?, 2

implication :filed @sicher 20:, 1924-. Seriali No. 'llj.

This iiivzanion relatos to combined mfio omi phonograph sysoms and has for its ob jesi' '-,iio promotion oir' a sugo amplifying horn for receiving and iansmiting, eihei sii'nuiaiioousiy oi suoclssivoy, sound Waves from phonograph and radio reproducors. A poiioulzir object oi' the invention is io provide Coiivonioni moans for operating the ii'ochoiiiom which Coni'ois the, cozictioii of the respective iopi'oducoi's wh the amplifying hom. n oidoi to set iii operation a. mdio iocoivingj system ii is usual 'to dos@ wffificii7 such as iii@ Swioii in tho ilzimen ci soif; mui one object of our imfention is io :Ii-ovini@ ziuomziio .moons for selecting 'he 51mm." Whisk io CooC with the hoi'n fno iaio opooting Sw'oh is eizier opoi'ao oi' oiosoo. iioi objects of iie iovontioo Wil be amoieniz from L considera on oi" bho occorsi mirino; drawings, and "cho ioscription hoi'oo'i drawings FEW, i. is. an elevation, 'iy sommi, iiiined iodio and A* mogiiph system which embodies fooi/uros our invention; is a iagi'ammotio w oi? tiio iodio om; 3 is an oiovo fion, poiiiy in section, oi' a modiod form "mimi-fis; 4; is oiiimgod detoii View i ,o opoiotinp; moohanism of the appaiofms of Fig; 4f: m Fig. is :i diagrammatic View ii: os con im die oihoi' iniot. Ui' iiilfiwi y borwoon ih cioongi" ibo radio iniot, so that normally ille phonograph inici is open. Bot Wo prow/ido nominatie moans for opening tho radio niovl and, closing tho phonograph iiiles when "rho iodio system is sot in operation by moons of ih@ ordinary controlling svteii H it is desired to use. both 'ioproduc-ei's simultaneously moans oro provided. foi: holding the valve in its mid've'oj or otixei desired positions.

Aix); Sumoio rosiiiont moans may no provided for hoii. the Valve normaliy so as; io close. vtho radio inie'.. 4Wo prefer fha purpose im nxm 2G xod to the mii/'o som outside of tho imm, and o, sofi y which coimoois the mii 20 ififii iho fi i1 of tho oobiiio, so that the spr-ing Q2 .ummk iy ho'ds tile miv@ 18 in posiion "Lo closo dio i'aiiio iiiioi. Whoo ehbo i-oio systgov #zo bo useds howoi/el", it is oooossmj 'to open tho "odio inoi7 :md for #do puiposo wo pi'ovo meollo which :xwoman-sali o ovaio the volwwiioii tho .swlmii ci@ Mio oiiooi': of the ifmion These m ono comprise o, (for @uit 2G which is connectefi io bho iitfory 2T of tho filament circuit oiiier in series with dimers Sirnuonoously We provide moons for hoifiiip; ibo volvo in its midway; position Thos@ moons comprise stop 3l. which is posiioimi so as izo prev-ont *die 20 from i) ii way )osition when the stop is pushed upwardly; the projection 32 on the end of the arm then strikes on the stop 31. W'hen the switch 24 is closed the solenoid Q8 will hold the switch in the midway position so lonalr as the radio system is used. lf it is desired then to use the radio system alone it is necessary only to pull out the stop and the arm 20-vill be forced downwardly by the Solenoi Figures 3 to 5 illustrate a modification of our automatic system. As is Well under- Stood the switch let is ordinarily operated by meanslof a knob on a panel board, merely rotatingr the knob one way closes the switch, and rotating it the other Way opens the switch. In this modified system We provide means for operating the valve 18, instead of operating the switch 24 directly, and provide automatic means for operating the switch when the valve is operated. Any

' suitable means may be used for operating the valve; but We prefer for the purpose the ,knob which is mounted on the 'valve stem 3G, the valve 18 being fixed to the stem, and the stem being journaled in the junction of the tWo inlets 12 and 14 of the horn. The knob 35 may be positioned in any convenient point of the cabinet, but we prefer to have the stem 36 project through the dial board 37, so that the valve can be operated by rotating;r the knob 35 on the panel hoard substantially in the sime manner as the switch of the lament circuit is ordinarily operated. In Ythis instance we prefer to use a balanced valve, anal forithis purpose proride a weight 38 mounted on the arm 39 which is fixed to the stem BG, so that the valve 18 will remain in any position desired.

Any suitable means may be used for setting in operation the radio system when the valve is operated by the kn'ob 35. We prefer for this purpose a switch 40, the terminals of which are connected to the wires 41 of the filament circuit. W'hcn the knob 35 is operated to open the radio inlet 12, the switch will be automatically operated to close the filamentcircuit Lil; and when the valve 18 is returned to the position to close the inlet 12 the switch 40 will be opened.

In order to operate both re aroducers simultaneously it is necessary only for the operator to rotate the valve to its medium position and the arrangement of the switch 40 i is such that the filament circuit will then he closed. It Willbeundcrstood that the switch fl() comprises a wheel 4Q, the peripheral surface of which is composed of a non-eonduct ing substance 43 except for the conductor 44, and when the wheel :is rotated so that the two brushes 45 are on the conductor 44, the circuit '41 will be closed. And the angular position of the conductor 44: is such that the circuit will be closed whenever the valve 18 is in the midway position as Well as in the position to close the inlet 12. But when the valve is raised above the midway position the circuit will he opened.

`We claim as our invention:

1. An amplifying horn having an outlet and two inlets, means for closina-l either. of said inlets, resilient means tending,r to hold said valve in onev closed position, means for holding said valve in its other closed position, and means for holdimgr said valve in an intermediate position. l

2. An amplifying horn having an outlet and two inlets, a sound reproduccr opera tively connected with each of said inlets, a valve for closing either of said inlets` resilient means for holding said valve in one closed position, means for holding said valve in its other closed position, and means for holding said `valve in an intermediate posi- -h tion.

In testimony whereof We hereunto set our hands.

WALTER LYTTON. PHILIP E. EDELMAN.

(ill 

